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Study suggests no benefit to eating for your blood type

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As many individuals struggle with their annual New Year's resolutions to lose weight, a study published yesterday in the scientific journal PLOS ONE says that following a particular diet based on one's blood type probably won't be of much help.

The study tested the various diets described in P.J. D'Adamo's book “Eat Right For Your Type,” which has sold millions of copies worldwide. Scientists monitored nearly 1500 participants in the Toronto Nutrigenomics and Health Study for adherence to one of the four blood type diets - A, B, AB or O - and periodically checked their weight, BMI, waist circumference, blood pressure, C-reactive protein, cholesterol, triglycerides and other markers of cardiac risk.

Participants were men and women aged 20 to 29 from various ethnic groups. The scientists used statistical software from SAS Institute in Cary, NC for analyzing the results.

While three out of the four diet plans provided some benefit to one or more of the health measures, a person's blood type had no bearing on whether he or she benefited from following any of the eating regimens. Individuals of each blood type were equally likely to experience changes in their health metrics from following one of the blood type diet plans.

The analysis didn't set out to determine what diet works best for any particular person. It only aimed to find out whether eating differently based on one's blood type would help with various health measures, including weight, and it did not.

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